I struggle eating fruit - it makes me feel quite ill looking at it sometimes! I think I probably have food phobias.
I nibble on chicken and green beans at dinner a few times a week (generally so DH has someone to eat with) but now and again I get really hungry. I just had a takeaway and gobbled a whole Pizza Express Romana pizza. Effectively I graze and eat a meal when I need.
My DH finds me hard work, I don’t like roast dinners - I can’t even look at them (or tea) without retching. I don’t think he’d dump me over it though!
Where I find it difficult is going out for a meal with work colleagues (with my family I can have just a starter). I never tell people this though and just go along with the flow!
Anyway, I’d give it a go. He may be a really nice person. Food problems are not childish - they can’t be helped. He may not have been brought up with them so his taste buds may need adjusting, or he may have a negative association with them. I’m not sure where mine stems from but my Dad (who is healthy) has similar issues to me. He’s been married 50 years!